Answer:
High tides and low tides are caused by the Moon.
Explanation:
The Moon's gravitational pull generates something called the tidal force.
Answer:
The moon is one
Explanation:
The moon has a strong gravitational force, and because of that it has certain control on Earth's oceans which can make tides
A driver who does not wear a seatbelt continues to move forward with a speed of 18.0 m/s (due to inertia) until something solid like the steering wheel is encountered. The driver now comes to rest in a much shorter distance-perhaps only a few centimeters. Find the magnitude of the net force acting on a 65.0 kg driver who is decelerated from 18.0 m/s to rest in 5.00 cm. A driver who does not wear a seatbelt continues to move forward with a speed of 18.0 (due to inertia) until something solid like the steering wheel is encountered. The driver now comes to rest in a much shorter distance-perhaps only a few centimeters. Find the magnitude of the net force acting on a 65.0 driver who is decelerated from 18.0 to rest in 5.00 . F=3240N F=1.173×104N F=2.113×105N F=4.213×105N
Answer:
F = 2.113 x 10⁵ N
Explanation:
First we need to calculate the deceleration of the driver by using 3rd equation of motion:
2as = Vf² - Vi²
where,
a = deceleration = ?
s = distance = 5 cm = 0.05 m
Vf = Final Velocity = 0 m/s
Vi = Initial Velocity = 18 m/s
Therefore,
2a(0.05 m) = (0 m/s)² - (18 m/s)²
a = (- 324 m²/s²)/0.1 m
a = - 3240 m/s²
where, negative sign represents deceleration
From Newton's Second Law of Motion:
F = ma
F = (65 kg)(-3240 m/s²)
F = - 2.106 x 10⁵ N
So, he closest answer is:
F = 2.113 x 10⁵ N
7. What major disaster followed the comet of 1664?
Answer:
The plague and the london fires.
Explanation:
Lots of war happened after that. They had an outbreak as we known called the Plague. After the Comet, lots of fires were set in London.
Protein helps the body?
SOMEONE PLEEEAASSEE HELP ME T.T . This is due today! 40 points!!! I need to know how to find the x-axis.
Make a graph in which you plot Vertical height vs. Horizontal Distance. You are given the y axis data (see below) and you must use this data to determine the x axis data you will plot. Assume the following y axis. ( you need to make a calculated column for x distance )
Y = 1 m
Y = 2 m
Y = 5 m
Y = 10 m
Y = 15 m
Y = 25 m
Y = 35 m
Y = 65 m
(Assume that velocity (Vox) remains constant at 1m/sec)
Answer:
GET NOOBED BEECH
Explanation:
asfasdfasdfasdfasdfasdf
An object is moving to the left and is slowing down. its acceleration is
Answer:
According to our principle, when an object is slowing down, the acceleration is in the opposite direction as the velocity. Thus, this object has a negative acceleration.
An object is moving to the left and is slowing down. its acceleration is acting in opposite direction of motion, that is, in right direction.
What is acceleration?The rate at which velocity changes with time in terms of both speed and direction is referred to as acceleration. A point or object moving in a straight line is accelerated if it accelerates or decelerates. Even if the speed is constant, motion on a circle is accelerated because the direction is constantly changing. Both effects contribute to acceleration in all other types of motion.
Acceleration is a vector quantity because it has both a magnitude and a direction. Velocity is a vector quantity as well. The change in the velocity vector in a time interval divided by the time interval is defined as acceleration.
Hence, an object is moving to the left and is slowing down. its acceleration is acting in opposite direction of motion.
Learn more about acceleration here:
brainly.com/question/12550364
#SPJ2
3. A car advertisement states that a certain car can accelerate from rest to 70 km/h in 7 seconds.
Find the car's average acceleration.
Answer:
10 km/s^2
Explanation:
Acceleration = velocity/time
a= 70km/7s
= 10km/s^2
Heating effect of current is not always useful for us. Support your answer with example
Answer:
is correct
Explanation:
in my think, first this due to ray emitted from the light those ray may be affect our skin or party of body.
Match the term with the correct description.
1. energy levels
2. protons
3. neutrons
4. electrons
c. varying ranges of energy that electrons can have
b. neutrally charged particles
d. negatively charged particles
a positively charged particles
Explain why a schoolbus appears to be yellow.
A. Yellow light is absorbed, while all other colors are reflected.
B. All colors are reflected, but yellow is reflected at a more direct angle.
C. All colors are reflected, but only yellow makes it to your eyes.
D. Yellow light is reflected, while all other colors are absorbed.
A red bouncy ball is dropped from 10 meters high. As it fails a wind is blowing horizontal at the speed of 15 m/s. How far horizontally will the ball hit from the point at which it was dropped? Please round to 1 decimal place. You will enter in units of meters but NUMBER ONLY.
A crate is dragged across an ice covered lake. The box accelerates at 0.08 m/s2 and is pulled
by a 47 N force. What is the mass of the box?
Given parameters:
Rate of acceleration of the box = 0.08m/s²
Force applied to the box = 47N
Unknown:
Mass of the box = ?
The force applied on a body is push or pull on it to move it in a specific direction. Force causes the motion of a body.
Mathematically, force is expressed as the product of mass and acceleration;
Force = mass x acceleration
Input parameters and solve for mass;
47 = mass x 0.08
mass = [tex]\frac{47}{0.08}[/tex]
mass = 587.5Kg
The mass of the box is 587.5Kg
In a closed system that has 45 J of mechanical energy, the gravitational
potential energy of a ball rolling down an inclined plane decreases from 8 J to
Answer:
the answer is d
Explanation:
I just did this test
An Olympic-class sprinter starts a race with an acceleration of
4.50 m/s^2
. (a) What is her speed 2.40 s later? (b) Sketch a graph of her position vs. time for this period.
Answer:
a) Vf = 10.8 [m/s]
b) See the image attached.
Explanation:
a)
To solve this part we must use the following kinematics equation:
[tex]v_{f} =v_{o} + (a*t)[/tex]
where:
Vf = final velocity [m/s^2]
Vo = initial velocity = 0
a = aceleration = 4.5 [m/s^2]
t = time = 2.4 [s]
Note: The initial velocity is taken as zero, as the athlete starts from rest
Vf = 0 + (4.5*2.4)
Vf = 10.8 [m/s]
b)
Now knowing that acceleration remains constant between the time interval between 0 to 2.4 seconds. We will take 5 different times between the 2.4 elapsed.
Dt = 2.4/5
Dt = 0.48 [s]
So the first time is 0, the second will be (0 + 0.48) = 0.48, the third (0.48 + 0.48) = 0.96, the fourth (0.96 + 0.48) = 1.44, and the fifth (1.44 + 0,48) = 1.92, and the last one (1.92 + 0.48) = 2.4
We need to find the velocity for each time calculated before, with the ecuation used in a) we cand calculate the different velocities.
Vfo = 0 + (4.5*0) = 0
Vf1 = 0 + (4.5*0.48) = 2.16 [m/s]
Vf2 = 0 + (4.5*0.96) = 4.32 [m/s]
Vf3 = 0 + (4.5*1.44) = 6.48 [m/s]
Vf4 = 0 + (4.5*1.92) = 8.64 [m/s]
Vf5 = 0 + (4.5*2.4) = 10.8 [m/s]
The next step is to use the following equation of kinematics, to be able to determine the position of the athlete for each speed.
[tex]v_{f}^{2} =v_{i}^{2} +(2*a*x)\\if \\v_{i}=0\\then\\x = \frac{v_{f}^{2}}{2*a}[/tex]
x1 = 0
x2 = (2.16)^2/(2*4.5) = 0.518 [m]
x3 = (4.32)^2/(2*4.5) = 2.074 [m]
x4 = (6.48)^2/(2*4.5) = 4.67 [m]
x5 = (8.64)^2/(2*4.5) = 8.29 [m]
x6 = (10.8)^2/(2*4.5) = 12.96 [m]
Now in the x-axis we put the time values found before as well the x values en the y-axis.
The normal force acts ________________________ to the surface and the friction force act _______________ to the surface.
Its like almost 12 pm rn and i have school tomorrow so i dunno why im still up but i just wanna know how big the world is. like in miles how long is it all the way around??? i could just look it up but i like to socialize sooooo someone tell me please :)
I dont know what subject to put this under lol
what should scientists do when they see that the data collection or analysis from their experiment phyhas limitations APEX
A. describe the limitations in detail in thier final report.m
B. ignore the limitations when they draw conclusions.
C. repeat the experiment to see if it still has limitations.
D. decide not to report any of the expromental results.
Answer:
C. Describes the limitations in detail in their final report.
Explanation:
A. Describe the limitations in detail in their final report
The corpus callosum is comprised of more than 200 million axons that connect the hemispheres of the brain. Please select the best answer from the choices provided T F
Hello, love! The answer is True, or T, on Edge2020.
Hope this helped!
~ V.
Answer:
'Tis True my friends
Explanation:
Scientific notation is a method of expressing very small and very large numbers *
yes
No
A bridge spanning a river is 98.0 meters above the water.
How long would it take a rock dropped from the bridge to hit the water?
A high powered rifle can shoot a bullet at a speed of 1500 mi/hr. On the moon, with almost no atmosphere and an acceleration due to gravity of 1.6 m/s2, a bullet shot straight into the air would take how long to return to the moon's surface? On Earth, a standard .30 caliber bullet fired from a rifle pointed straight up would rise to an altitude of 9,000 feet (2,743.2 meters) in 18 seconds, and then would return to Earth in another 31 seconds. How much influence does the atmosphere have on a bullet fired from the surface of the Earth?
Answer:
Explanation:
On the Moon :----
1500 x 1.6 = 2400 m /s is initial velocity of bullet .
g = 1.6 m /s²
v = u - gt
0 = 2400 - 1.6 t
t = 1500 s
This is time of ascent
Time of decent will also be the same
Total time of flight = 2 x 1500 = 3000 s
On the Earth : ---
v = u - a₁ t
0 = u - a₁ x 18
u = 18a₁
v² = u² - 2 x a₁ x 2743.2
0 = (18a₁ )² - 2 x a₁ x 2743.2
a₁ = 16.93
For downward return
s = ut + 1/2 a₂ x t²
2743.2 = 0 + .5 x a₂ x 31²
a₂ = 5.7 m /s²
If d be the deceleration produced by air
g + d = 16.93 ( during upward journey )
g - d = 5.7
g = (16.93 + 5.7) / 2
= 11.315 m / s
d = 5.6 m /s²
So air is creating a deceleration of 5.6 m /s².
While standing on a balcony a child drops a penny. The penny lands on the ground floor 1.5 s later. How fast was the penny traveling vertically when it struck the ground floor?
*The height of the balcony is 11.025 meters
Answer:
14.7 m/s.
Explanation:
From the question given above, the following data were obtained:
Time (t) = 1.5 s
Acceleration due to gravity (g) = 9.8 m/s².
Height = 11.025 m
Final velocity (v) = 0 m/s
Initial velocity (u) =?
We, can obtain the initial velocity of the penny as follow:
H = ½(v + u) t
11.025 = ½ (0 + u) × 1.5
11.025 = ½ × u × 1.5
11.025 = u × 0.75
Divide both side by 0.75
u = 11.025/0.75
u = 14.7 m/s
Therefore, the penny was travelling at 14.7 m/s before hitting the ground.
pls help
If heat is removed from point E and the temperature had not changed, the substance will
A. Condense
B. Boil
C. Melt
D. Evaporate
Answer:
melt
Explanation:
hope it helps you plz mark me brilliantest
Answer:
i think E hola
Explanation:
I dont know
Which has more kinetic energy, a 40 kg cheetah running at 25 m/s or a 4,000 kg elephant moving at 2 m/s? How much more energy does it have?
Answer:
1st case; mass=40 kg
v=25m/s
K.E.=1/2[40][25]^2=12,500 J
2nd case; mass=4,000 kg
v=2 m/s
K.E.=1/2[4000][2]^2=8000J
in case 1 Kinetic energy is greater.
Explanation:
Suppose that John lives on a square block that is 180 yards per side, and in the evenings, he walks with his dog around the block for a little exercise.
b. If John walks once around the block, what is his final displacement?
O yards
720 yards
360 yards
540 yards
Answer: A
Zero yard.
Explanation:
Given that that John lives on a square block that is 180 yards per side, and in the evenings, he walks with his dog around the block for a little exercise.
Constant speed does not necessarily mean constant velocity.
If John walks once around the block, his final displacement will be equal to zero yard.
Because displacement is the distance between the initial and final position of an object. When an object returns to its original position, displacement will be therefore equal to zero yard.
Therefore, the best answer is option A
Answer:
720
Explanation:
6.A truck drives to a rock quarry at a speed of 20 m/s. The truck takes on a load of
rocks, which doubles its mass, and leaves at the same speed of 20 m/s. Compare the
kinetic energy of the truck as it left the quarry with its kinetic energy on the way to the
quarry. Explain your answer.
Explanation:
The kinetic energy is basically the energy possesses by virtue of a body's motion
1. The truck moving to the quarry
let the mass be x
and the velocity is given as 20m/s
we know that the kinetic energy is given as
KE=1/2mv^2
KE=1/2(x)*20^2
KE=1/2(x)400
KE=200x
2. The truck leaving to the quarry
let the mass be 2x
and the velocity is given as 20m/s
we know that the kinetic energy is given as
KE=1/2mv^2
KE=1/2(2x)*20^2
KE=1/2(2x)400
KE=400x
From the analysis the kinetic energy is a function of mass, doubling the mass doubles the kinetic energy
a psychologist studies if internet uses causes isolation
A) experimental
B) correlational
C) Descriptive
Why are there no famous women scientists associated with cell theory?
Answer:
there is you just have to look harder
Explanation:
if on average you walk 1.20 meters every second , how long do you walk i one hour?
Answer:
Explanation:
En cuánto tiempo se pueden caminar 20 km? Una persona sana, acostumbrada a andar camina a unos 4 o 5 kilómetros/hora, en terreno llano. Puede tardar 5 horas o 4.
Answer:
4,320meters
Explanation:
Hey can you plz help me
Leo makes an electrical circuit using a battery, copper connection wires and a
lamp.
1 Diagram the assembly and say if the lamp lights up.
2 Specify the direction of movement of the free electrons.
3 Leo reverses the connections to the battery terminals. In which direction do the
free electrons
Which statement best describes how scientists and engineers work together
in the research and development cycle?
A. Scientists develop a new technology, and then engineers test it by
doing experiments.
B. Engineers come up with scientific questions when they are
developing their design, and scientists do research to answer
them.
C. Scientists test designs made by engineers and then use the
results to improve the designs.
D. Engineers make a scientific discovery, and then scientists perform
research to verify it.
B. Engineers come up with scientific questions when they are
developing their design, and scientists do research to answer
them
Answer:
Yeah that's right
Explanation:
